BSI Standards PublicationFibre optic interconnecting devices and passive components — Basic test and measurement procedures Part 2-52: Tests — Bending test for cords... The UK participa
Trang 1BSI Standards Publication
Fibre optic interconnecting devices and passive
components — Basic test and measurement procedures
Part 2-52: Tests — Bending test for cords
Trang 2National foreword
This British Standard is the UK implementation of EN 61300-2-52:2013 It is identical to IEC 61300-2-52:2013
BSI, as a member of CEN, is obliged to publish EN 61300-2-52 as a British Standard However, attention is drawn to the fact that during the development of this European Standard, the UK committee voted against its approval as a European Standard
The committee noted a possible inconsistency between clause 3, which states that optical measurements should be made before and after the test, and clause 5.4, c) which states that optical measurements are also made during the test The committee is also of the opinion that the mention of fibre, cable and resilient members being fixed together in clause 4.3 may not be appropriate for all fibre optic connectors
The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnecting devices and passive components
A list of organizations represented on this subcommittee can be obtained
on request to its secretary
This publication does not purport to include all the necessary provisions of
a contract Users are responsible for its correct application
© The British Standards Institution 2014
Published by BSI Standards Limited 2014
ISBN 978 0 580 70942 5
ICS 33.180.20
Compliance with a British Standard cannot confer immunity from legal obligations.
This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2014
Amendments /corrigenda issued since publication Amd No Date Text affected
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NORME EUROPÉENNE
CENELEC
European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members
Ref No EN 61300-2-52:2013 E
ICS 33.180.20
English version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures -
Part 2-52: Tests - Bending test for cords
(IEC 61300-2-52:2013)
Dispositifs d’interconnexion et
composants passifs à fibres optiques -
Procédures fondamentales d’essais et de
mesures -
Partie 2-52: Essais -
Essai de courbure pour les cordons
(CEI 61300-2-52:2013)
Lichtwellenleiter - Verbindungselemente und passive Bauteile -
Grundlegende Prüf- und Messverfahren - Teil 2-52: Prüfungen -
Biegeprüfung für konfektionierte Kabel (IEC 61300-2-52:2013)
This European Standard was approved by CENELEC on 2013-03-28 CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member
This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom
Trang 4EN 61300-2-52:2013 - 2 -
Foreword
The text of document 86B/3547/FDIS, future edition 1 of IEC 61300-2-52, prepared by SC 86B, "Fibre optic interconnecting devices and passive components", of IEC TC 86, "Fibre optics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61300-2-52:2013
The following dates are fixed:
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dop) 2013-12-28
• latest date by which the national
standards conflicting with the
document have to be withdrawn
(dow) 2016-03-28
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights
Endorsement notice
The text of the International Standard IEC 61300-2-52:2013 was approved by CENELEC as a European Standard without any modification
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60794-1-2 NOTE Harmonized as EN 60794-1-2
IEC 61300-3-28 NOTE Harmonized as EN 61300-3-28
Trang 5- 3 - EN 61300-2-52:2013
Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies
IEC 61300-1 - Fibre optic interconnecting devices and
passive components - Basic test and measurement procedures -
Part 1: General and guidance
EN 61300-1 -
IEC 61300-3-1 - Fibre optic interconnecting devices and
passive components - Basic test and measurement procedures -
Part 3-1: Examinations and measurements - Visual examination
EN 61300-3-1 -
IEC 61300-3-3 - Fibre optic interconnecting devices and
passive components - Basic test and measurement procedures -
Part 3-3: Examinations and measurements - Active monitoring of changes in attenuation and return loss
EN 61300-3-3 -
IEC 61300-3-4 - Fibre optic interconnecting devices and
passive components - Basic test and measurement procedures -
Part 3-4: Examinations and measurements - Attenuation
EN 61300-3-4 -
Trang 6– 2 – 61300-2-52 © IEC:2013
CONTENTS
1 Scope 5
2 Normative references 5
3 General description 5
4 Apparatus 5
4.1 General 5
4.2 Cord 5
4.3 Specimen 6
4.4 Optical measurements 6
5 Procedure 6
5.1 General 6
5.2 Preconditioning 6
5.3 Initial examinations and measurements 6
5.4 Procedure 6
5.5 Final examinations and measurements 7
6 Severity 7
7 Details to be specified 8
Bibliography 9
Figure 1 – Specimen fixed onto mandrel 7
Figure 2 – Cable wrapped around mandrel 7
Figure 3 – Required number of mandrel rotations applied 7
Table 1 – Severity 8
Trang 761300-2-52 © IEC:2013 – 5 –
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS – BASIC TEST AND MEASUREMENT PROCEDURES – Part 2-52: Tests – Bending test for cords
1 Scope
This part of the IEC 61300 series describes a procedure to determine the suitability of a cord to withstand bending around a mandrel of the sort to be applied during normal use This test is only applied to single fibre cables and multiple fibre circular cables It is not applicable to ribbon cables
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies
IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 1: General and guidance
IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-1: Examinations and measurements – Visual examination
IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of changes in attenuation and return loss
IEC 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-4: Examinations and measurements – Attenuation
3 General description
The purpose of this test is to determine the capability of the cord when repeatedly bent Optical measurements are made before and after the test to screen for evidence of damage to the fibre/cable
4 Apparatus
4.1 General
A single mandrel apparatus shall enable the sample to be wrapped tangentially in a close helix around a single test mandrel
4.2 Cord
A cord is a fibre optic cable terminated with any passive fibre optic connector on both ends, regardless of its expected use Examples include equipment cords, work area cords or patchcords
Trang 8– 6 – 61300-2-52 © IEC:2013
4.3 Specimen
The specimen shall be a cord The connectors shall be terminated according to the manufacturer's instructions so that the fibre, cable and resilient members are fixed together
4.4 Optical measurements
Unless otherwise specified, measuring equipment specified in IEC 61300-3-4 shall be connected to the specimen for monitoring optical performance during the test
5 Procedure
5.1 General
Sufficient tension shall be applied to ensure that the sample contours the mandrel The sample shall then be unwrapped
A cycle consists of one wrapping and one unwrapping
The diameter of the test mandrel, the number of turns of the mandrel and the number of cycles shall be shown in the relevant specification
5.2 Preconditioning
Precondition the specimen and all equipment for 2 h under standard test conditions as defined
in IEC 61300-1, unless otherwise specified in the relevant specification
5.3 Initial examinations and measurements
Complete the initial examinations and measurements
5.4 Procedure
a) Connect the specimen to the optical measurement equipment according to IEC 61300-3-3 b) The specimen shall be initially positioned as shown in Figure 1 The two straight sections shall be perpendicular to the mandrel and spacing between the two straight sections shall
be such that the diameter of the loop is greater than the cable's minimum bend diameter c) Start the optical power measurements
d) The specimen shall be wrapped around the mandrel at a uniform tension such that there are no gaps between the cable and the mandrel during the bending cycles (see Figure 2) The required number of turns around the mandrel shall be applied Each revolution of cable
on the mandrel shall be close to the adjacent revolutions or cable wraps (see Figure 3) e) The specimen shall be kept in this position for at least 1 min
f) The specimen shall be unwrapped and kept in this position for at least 1 min
g) The required number of cycles shall be applied by repeating steps d) to f) in a timely manner at a rate no greater than 1 wrap per minute
h) Stop optical power measurements
Trang 961300-2-52 © IEC:2013 – 7 –
Specimen
Figure 1 – Specimen fixed onto mandrel
IEC 483/13
Figure 2 – Cable wrapped around mandrel
IEC 484/13
Figure 3 – Required number of mandrel rotations applied 5.5 Final examinations and measurements
Unwrap the cable from the mandrel and make the final measurements, as defined by the relevant specification, to ensure that there is no permanent damage to the specimen The results of the final measurement shall be within the limit established in the relevant specification
Visually check (IEC 61300-3-1) that the cable and fibre optic device are not damaged
6 Severity
Severity consists of the combination of the number of turns per helix, number of cycles, mandrel diameter and cord length The severity shall be specified in the relevant specification
or taken from Table 1 below:
Trang 10– 8 – 61300-2-52 © IEC:2013
Table 1 – Severity
15 × cable diameter for cable diameter >4 mm
Length of specimen sufficient to carry out the test
Distance between connectors and mandrel
7 Details to be specified
The following details, as applicable, shall be specified in the relevant specification:
a) cable and connector type;
b) wavelength of the attenuation measurement;
c) initial examinations and measurements and performance requirements;
d) examinations and measurements during test and performance requirements;
e) final examinations and measurements and performance requirements;
f) deviations from test procedure;
g) additional pass/fail criteria;
h) diameter of the test mandrel, the number of turns of the mandrel, and the number of cycles
Trang 1161300-2-52 © IEC:2013 – 9 –
Bibliography
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test
procedures
IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-28:Examinations and measurements – Transient loss
_
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